Isabella Bank Corporation filed a prospectus supplement updating its shelf registration to permit an at-the-market equity offering through Piper Sandler under an Equity Distribution Agreement to sell up to $30,000,000 of common stock. Sales may occur from time to time at prevailing market prices and Piper Sandler may receive up to 3.0% of gross proceeds. The company stated consolidated totals as of March 31, 2026 of approximately $2.3 billion in total assets, $1.6 billion in gross loans, $1.9 billion in deposits and $234.0 million in shareholders’ equity. The supplement also discloses a pending merger agreement with Grand River Commerce, Inc., expected to close in Q4 2026, and that the company anticipates issuing approximately 839,003 shares in connection with that acquisition. Net proceeds from the offering are for general corporate purposes, including possible capital contributions to the Bank, repayment of indebtedness, and support for growth or acquisitions.
Isabella Bank Corporation entered into a definitive merger agreement to acquire Grand River Commerce, Inc. The transaction calls for a three-step legal combination: Merger Sub into Grand River, a Second Step Merger into Isabella, and a subsequent Bank Merger of the banking subsidiaries.
Consideration will be elected by Grand River shareholders and prorated: 65% of shares to receive stock and 35% to receive cash drawn from an $18,262,391 Aggregate Cash Consideration. Based on an assumed 9,122,073 shares outstanding, the per-share cash estimate is approximately $5.72 and the estimated exchange ratio is approximately 0.1415. Closing remains subject to shareholder approval, regulatory approvals, Nasdaq listing authorization, Form S-4 effectiveness and other customary conditions.
Isabella Bank Corporation entered into a definitive agreement to acquire Grand River Commerce, Inc. in a cash-and-stock merger, followed by holding-company and bank-level mergers that will combine Grand River Bank into Isabella Bank.
Grand River shareholders can elect cash or Isabella stock, subject to proration so that 35% of Grand River shares receive cash and 65% receive stock. The deal includes an aggregate cash pool of $18,262,391 and up to 839,003 shares of Isabella common stock. Based on an assumed 9,122,073 Grand River shares, the estimated per-share cash consideration is about $5.72 and the estimated stock exchange ratio is about 0.1415 Isabella shares per Grand River share. Closing requires Grand River shareholder approval, multiple regulatory approvals, Nasdaq listing of new Isabella shares and effectiveness of an S-4 registration. Grand River must pay a $2.18 million termination fee in certain circumstances, and Grand River’s directors and executive officers have signed voting agreements supporting the transaction.
Isabella Bank Corporation describes a pending acquisition of Grand River Bank, a West Michigan community bank with $512 million in assets and two branch locations. The communication states Grand River locations will be rebranded as Isabella Bank upon closing and that current Isabella customers will see no acquisition-related changes.
The notice says incoming Grand River customers will be transitioned onto Isabella’s systems, products, and brand over time, many Grand River employees are expected to join Isabella, and no Isabella branches are planned to close. The companies note that a registration statement on Form S-4 will be filed and include customary forward-looking statement disclosures and closing risks.
Isabella Bank Corporation and Grand River Bank disclosed a pending merger under which Grand River will become part of Isabella Bank, with the combined organization to operate under the Isabella Bank name after closing. The communication describes expected benefits such as expanded digital services, higher commercial lending limits, and access to Isabella’s Wealth Management team ($800 million AUM) and $2.2 billion in assets across 31 locations. The transaction is expected to close in the fourth quarter of 2026, subject to regulatory and shareholder approvals, with a systems conversion currently anticipated in December 2026.
The message states there are no immediate changes to customer accounts or employee benefits while integration planning and employment determinations continue. The communication includes standard forward-looking statement language and confirms Isabella will file a registration statement on Form S-4 and a proxy statement/prospectus with the SEC.
Isabella Bank Corporation agreed to acquire Grand River Commerce, Inc., with Grand River Bank to be merged into Isabella Bank. The transaction is expected to close in the fourth quarter of 2026 and the combined institution will operate under the Isabella Bank name.
Customers should expect business as usual until closing; Grand River customers will convert to Isabella Bank systems with a planned system conversion in December 2026. The combined organization will include 33 locations across nine counties in Michigan and the banks say customers will gain access to additional branches, ATMs, and Isabella’s digital banking tools.
Isabella Bank Corporation and Grand River Commerce, Inc. agreed to merge after Isabella, 401 Merger Sub, Inc. and Grand River executed an Agreement and Plan of Merger on June 11, 2026. A joint press release was issued and an investor presentation was furnished on June 12, 2026.
The filing states that Isabella will file a registration statement on Form S-4 containing a proxy statement/prospectus for Grand River shareholders and that the transaction is subject to customary closing conditions, shareholder approvals and regulatory approvals.